Which phase of flight does WAAS support?

WAAS, or the Wide Area Augmentation System, is designed to enhance the accuracy and reliability of GPS signals for all phases of flight. This sophisticated system provides critical corrections to the GPS information, which results in more accurate navigation capabilities.

The support for all phases of flight means that WAAS is beneficial during take-off, en route navigation, and landing, specifically during the approach phases where precision is paramount. It allows pilots to perform approaches to precision standards, which can improve safety and efficiency in both the terminal area and during en route operations.

Other choices suggesting that WAAS only supports take-off or landing do not capture the comprehensive nature of WAAS. Similarly, the option stating none of the above overlooks its capabilities to assist throughout the entirety of flight operations. Therefore, recognizing that WAAS supports all phases of flight is vital for understanding its importance in modern aviation navigation and safety.